.wxtip{background: rgba(0,0,0,0.8); text-align: center; position: fixed; left:0; top: 0; width: 100%; height: 100%; z-index: 9980; }
.wxtip-icon{width:10rem; height: 7.2rem; background: url(./live_weixin.png) no-repeat; background-size: 100% 100%; display: block; position: absolute; }
.wxtip-txt{margin-top: 107px; color: #fff; font-size: 18px; line-height: 1.5;}